adjustable thermo fan switch working principle is the use of bimetallic thermal expansion and contraction, Bimetal and stent are exposed. So use the need to pay attention to the installation.
1.  Using the contact-type temperature sensing installation, The temperature switch metal cover plane should be completely close to the heating surface of the controlled appliance.
2.  To ensure the temperature sensing effect, To thermostat,  temperature sensitive surface coated with thermal paste.
3. The installation can not be the top of the thermostat metal surface crush, Loose or deformed, So as not to affect the function and precision.
4. Do not allow the liquid to penetrate the temperature inside the switch, too large external force to make the shell crack.
5. Do not arbitrarily change the type of external terminal, So as not to affect the electrical reliability, And insulation protection measures, To prevent leakage, Make sure to use safety.